Williams.litters {BinaryEPPM}R Documentation

Number of implantations, data of Williams (1996).

Description

The data is arranged as a list of frequency distributions of numbers of surviving foetuses for an given litter size. The litter size is the length of the frequency distribution. Dose is included both as a variate (vdose) and as a factor (fdose).

Usage

data("Williams.litters")

Format

The format is: List of 3 $ vdose : num [1:34] 0.75 1.5 1.5 0 0.75 1.5 3 0.75 1.5 3 ... $ fdose : Factor w/ 4 levels "0","0.75","1.5",..: 2 3 3 1 2 3 4 2 3 4 ... $ number.surviving:List of 34 ..$ : num [1:8] 0 0 0 0 0 0 0 1 ..$ : num [1:8] 0 0 0 1 0 0 0 0 ..$ : num [1:9] 0 0 0 0 0 0 0 0 1 ..$ : num [1:10] 0 0 0 0 0 0 0 1 1 0 ..$ : num [1:10] 0 0 0 0 0 0 0 1 0 0 ..$ : num [1:10] 0 0 0 0 0 0 0 2 0 0 ..$ : num [1:10] 0 0 0 0 1 0 0 2 0 0 ..$ : num [1:11] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:11] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:11] 0 0 0 0 1 0 0 0 0 1 ... ..$ : num [1:12] 0 0 0 0 0 0 1 0 0 0 ... ..$ : num [1:12] 0 0 0 0 0 0 0 0 0 1 ... ..$ : num [1:12] 0 0 0 0 0 0 0 0 0 1 ... ..$ : num [1:13] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:13] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:13] 0 0 0 0 0 0 0 0 0 1 ... ..$ : num [1:13] 0 0 0 0 0 0 0 1 0 0 ... ..$ : num [1:14] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:14] 0 0 0 0 0 0 0 0 1 0 ... ..$ : num [1:14] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:14] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:15] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:15] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:15] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:15] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:16] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:16] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:16] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:16] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:17] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:17] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:17] 0 0 0 0 0 0 0 1 0 0 ... ..$ : num [1:18] 0 0 0 0 0 0 0 0 0 0 ... ..$ : num [1:20] 0 0 0 0 0 0 0 0 0 0 ...

Source

Williams D (1996). "Overdispersion in Logistic Linear Models." In B Morgan (ed.), Statistics in Toxicology, pp75-84. Oxford Science Publications.

References

Faddy M, Smith D. (2012). Extended Poisson Process Modeling and Analysis of Grouped Binary Data. Biometrical Journal, 54, 426-435. doi: 10.1002/bimj.201100214.

Examples

data("Williams.litters")

[Package BinaryEPPM version 2.3 Index]